Unit continually powers up on and off but no picture

Are the backup light lens blocked or dirty?

Probably a thermistor gone bad. When unit gets too hot the thermistor opens and cuts off juice to the heating element.

Replace the thermistor.

Two main reasons flash is used over continuous lighting.

Power. Lighting a scene for minutes uses much more power than lighting it for a fraction of a second. You may have noticed that most continuous lights need to be plugged in to a power supply, while most flash units work with small batteries. It may not make much difference if you're shooting indoors in a studio, but if you're out in the field and have to move around, it can get difficult lugging all that gear around.

Duration. A flash unit provides a very brief flash of light while a continuous unit is, well, continuous. A flash can freeze action much better than just using the camera's shutter. Try it yourself sometime: turn on the lights in the bathroom (and/or bring in your continuous light units) and take some pictures of a dripping faucet. Now turn off the lights and take some flash pictures of the same thing. See the difference?

take a hair dryer with back off and heat specific areas unit you find the location that is causing this, either main board or power supply are possible.

Remove the power from the unit for a minute. Plug in and see if it works. If it does great if not continue.

There is a possibility that the LCD Lamp blew. To check this, turn the unit on. Look really close at it for a picture. The picture will be dark adn hard to see from a distance but it would be there if there is no damage to the main components. If there is a picture than either the lamp or inverter went, you will need to have it serviced or replace the unit.

If there is no picture at all then your unit may have had the tuner board go in it. This is a service only option. Best thing to do is take this to a tech shop.

There is circuit problem inside. For safety reasons power might get shut down! Unless the fault is rectified, this problem will continue. Do not attempt switching ON again & again. Get authorised service center assistance.

Power off the All-In-One (AIO) off and remove the power supply from the back of the unit. Wait 30 seconds. Then reinsert the power supply and power the AIO on.
Did the error message return?
Yes: Continue to step 2.
No: Attempt a test scan. If the error message does not reappear, the error is resolved.
2 Power off the AIO and remove the power supply from the back of the unit. Open the scanner cover and check the scanner glass for cracks and the scanner casing for cracks. Close the scanner lid. Open the top cover of the AIO. Using the carrier belt, move the cartridge carrier to the middle of the unit. Remove both cartridges, close the top cover, reinsert the power supply, and power the AIO on.
Did the error message return?
Yes: Continue to Contacting Lexmark.
No: Continue to step 3.
3 Power off the AIO and remove the power supply from the back of the unit. Open the top cover of the AIO. Using the carrier belt, move the cartridge carrier to the middle of the unit. Insert the color cartridge, close the top cover, reinsert the power supply, and power on the AIO.
Did the error message return?
Yes: Repeat step 3 with another color cartridge. If the printer fails again, continue to step 4.
No: Repeat step 3 and install the black / photo cartridge. If both cartridges are installed, attempt a test scan. If the error message does not reappear, the error is resolved.
4 Power off the AIO and remove the power supply from the back of the unit. Open the top cover of the AIO. Using the carrier belt, move the cartridge carrier to the middle of the unit. Remove the color cartridge and insert the black / photo cartridge. Then close the top cover, reinsert the power supply, and power the AIO on.
Did the error message return?
Yes: Repeat step 4 with another black / photo cartridge.

won't turn on, green light comes on and them click sound and goes red, never a picture. continues to cycle through this every ten seconds or so

See if this helps Power off the All-In-One (AIO) and remove the power supply from the back of the unit. Wait 30 seconds, then reinsert the power supply and power the AIO on. Did the error message return? Yes: Continue to step 2. No: Print a test page. If the test page prints, the error is resolved. 2 Power off the AIO and remove the power supply from the back of the unit. Open the top cover of the AIO. Using the carrier belt, gently move the cartridge carrier to the middle of the unit. 3 Remove both cartridges from the AIO. Close the top cover, reinsert the power supply, and power the All-In-One (AIO) on. Did the error message return? Yes: There is a hardware problem with the printer. Continue to Contacting Lexmark. No: Continue to Step 4. 4 Power off the AIO and remove the power supply from the back of the unit. Open the top cover of the AIO. Using the carrier belt, gently move the cartridge carrier to the middle of the unit. 5 Insert the color cartridge. Close the top cover, reinsert the power supply, and power the AIO on. Did the error message return? Yes: Continue to Cleaning the Cartridge Contacts, then repeat steps 4 and 5. If you have already tried cleaning the contacts, continue to Defective Cartridge Test. No: Continue to step 6. 6 Power off the AIO and remove the power supply from the back of the unit. Open the top cover of the AIO. Using the carrier belt, gently move the cartridge carrier to the middle of the unit. 7 Insert the black cartridge. Close the top cover, reinsert the power supply and power the AIO on. Did the error message return? Yes: Continue to Cleaning the Cartridge Contacts, then repeat steps 6 and 7. If you have already tried cleaning the contacts, skip to Defective Cartridge Test. No: Print a test page. If the test page prints, the error is resolved. Cleaning the Cartridge Contacts NOTE: The embedded links in the table lead to specific troubleshooting documents. Step Action 1 Power off the AIO and remove the power supply from the back of the unit. Open the top cover of the AIO. Using the carrier belt, gently move the cartridge carrier to the middle of the unit. 2 Remove the cartridges. Clean the cartridge contacts (click here for instructions) and the AIO carrier contacts

It is worth fixing but you have to replace the power supply. It is a fairly common problem with the Westinghouse units.